- the page size of a book made up of sheets each of which is folded twice to form four leaves, or eight pages, about nine by twelve inches in size
- a book made of pages folded in this way
Origin of quartofrom Classical Latin (in) quarto from in, in + quarto, ablative of quartus, fourth: see quart
having four (quarto) leaves to the sheet
- The page size obtained by folding a whole sheet into four leaves.
- A book composed of pages of this size.
Origin of quartoShort for Middle English (in) quarto (in) the fourth part (of a sheet) from Medieval Latin (in) quārtō from Latin ablative of quārtus fourth ; see kwetwer- in Indo-European roots.
- (paper) A size of paper (7.5"-10" x 10"-12.5")(190-254 x 254-312 mm). Formed by folding and cutting one of several standard sizes of paper (15"-20" x 20"-25")(381-508 x 508-635 mm) twice to form 4 leaves (eight sides).
- (UK) Quarto writing paper (10 inches x 8 inches)
- (printing) A book size, corresponding to the paper size.
From Latin quartus (“fourth")